Toolholder



y 15, 1951 A. M. STONER 2,552,694

woowowsa Filed Oct. 29, 1945 llll III/IIIIIIII IIIIIIIIIIII" INVENTOR.A? new Maw/0r STONE/P A 7' TORNE K Patented May 15, 1951 TOOLHOLDERArthur Merrick Stoner, West Hartford, Conn., as-

signor to The Jacobs Manufacturing Company, Hartford, Conn, acorporation of Connecticut Application October 29, 1945,. Serial No.625,249

3 Claims.

This invention relates to an improved key holder for connecting a key orwrench to a tool with which it is to be used. It is especially designedto hold the key or wrench for an electrically driven chuck and to form aflexible connection between its electrical conductor and the chuck tomaintain the key in a convenient position for use and to prevent thedisplacement or loss of the key.

Referring to the drawings:

Fig. 1 is a side elevation of a key h lder which is made according toand embodies the invention.

Fig. .2 is a sectional front view of the device shown in Fig. l, thesection being taken on the line 2--2 of the latter figure.

Fig. 3 is a side elevation, partly in section, of the device shown inthe preceding figures with one of its ends afiixed to an electricalconductor and with a chuck key in the other end.

Fig. 4 is a plan View on a larger scale of some of the parts shown inFig. 3, illustrating the mode of affixing the device to an electricalconductor.

Fig. 5 is a sectional plan of other parts of the device illustrating themode of afiixing a tool to the device.

Fig. 6 is an end elevation of another form of tool which may be held bythe device.

The device is an integral piece of resilient material, such as an oilresistant synthetic rubber. One of its end portions, designated by thereference numeral It, is in the form of a thin walled hollow cylinderhaving a bore I l slightly smaller than the diameter of the part of thetool which is to be inserted in it. The other end portion, designated bythe reference numeral I2, is in the form of a flat head which hasconsiderably greater transverse width than thickness, in which is asubstantially rectangular eye or slot l3, the cross-sectional area ofwhich is considerably smaller than-that of the tubular end portion 10.The end portions 10 and I2 are interconnected by a flat strap-likeportion, It, the thickness of which is about one-half the thickness ofthe head l2 and slightly greater than the smaller dimension of the eye13. The width of this portion 34 is about double its thickness, and maybe uniform throughout its length. For a purpose which will be described,its width is greater than the length of the eye i3. As shown in thedrawings, the portion MA adjacent the head is wider than the length ofthe eye, and the remainder of this intermediate part of the device issomewhat narrower.

The head I2 is stretched to enlarge the eye l3 therein, and the tubularend portion 10 is passed through the eye. The device is furnished to theuser in the condition in which it is illustrated in Figs. 1 and 2 withthe strap l4 and MA in the form of a loop.

In afiixing the device to an electrical conductor 28, the loop formed bythe strap is passed over the conductor and the loop shortened by pullingthe strap It through the eye. When made as shown in the drawings, thecross-sectional areas of the eye it and of the strap is are so nearlyalike that the strap will slip through the eye easily until the widenedportion MA of the strap reaches the head 12. as shown in Fig. 4. Then atensional strain is put upon the strap in the direction of the arrow Ato stretch the strap. This reduces the cross-sectional size of theportion [4A in Fig. 4 and enables the loop to be tightened upon theconductor. When the tension is released the portion MA of the strap inthe eye tends to resume its original size and becomes locked in the headIt so that this end of the device is securely afiixed to the conductor23. When the strap is of a uniform width greater than the length of theeye, its cross-sectional size may be similarly reduced by stretching.

designates a chuck key which has a shank 3|. This is affixed to thedevice in the following manner: The end of the shank 3 I, which issomewhat larger than the bore II, is inserted in the end of the bore, asshown in Fig. 5. Then by squeezing the tubular portion together, asshown at 19A, air is expelled from the bore, after which the shank 3|may be pushed the rest of the way into the bore, as shown in Fig. 3. Theshank 3! is then securely affixed to the device. An outward pull on theshank 3| tends to decrease the diameter of the tubular portion l 0 andthereby increases the pressure of the bore II on the shank and itsfrictional grip on the shank. Immersing the shank in gasolene or thelike facilitates this operation. It makes the shank slippery and has thefurther effect of partially dissolving the surface of the bore II,which, upon drying, forms a cohesive bond with the shank.

Obviously the device is capable of holding other types of tools. Fig. 6shows, as an example, a chuck wrench 30A of another type, which has ashank 3| and a hexagonal arm 32 extending at right angles from its outerend. In this figure the end portion HJA is shown narrower than thecorresponding part It in Figs. 1 and 3, and closed except where theshank 3| is inserted.

Various modifications in construction, mode of operation, method and useof an invention may and do occur to others, especially after benefitingfrom knowledge of such a disclosure as that herein presented of theprinciples involved, but the invention itself is not confined to thepresent showing.

I claim:

1. A tool holder consisting of a single integral elongated piece ofresilient material having a head formed at one of its ends, atool-receiving portion formed at its other end and an intermediateconnecting portion, an eye formed in the head, through which eye thetool-receiving por tion may be passed to form a loop around anelectrical conductor, the cross-sectional area of the part of saidconnecting portion of the holder adjacent the head being greater thanthat of the eye and being engaged by pressure exerted upon it by theresilience of the head 'when it is forced through the eye.

2. A tool holder consisting of a single integral elongated piece ofresilient material having a transversely widened head formed at one ofits ends, a tool-receiving portion having a cylindrical bore formed atits other end, a rectangular eye of greater Width than thickness formedin the head, through which eye the tool-receiving portion may be passedto form a self-locking loop around an electrical conductor, and anintermediate connecting portion, the cross-sectional area of the part ofsaid intermediate connecting portion of the holder adjacent the headcorresponding in shape to, but having larger dimensions than those ofthe eye and being engaged by pressure exerted upon it by the resilienceof 4 the head after said adjacent portion has been forced through theeye.

3. A tool holder consisting of a single integral elongated piece ofresilient material having a transversely widened head formed at one ofits ends, a hollow cylindrical tool-receiving socket having a continuousWall formed at its other end, a rectangular eye of greater width thanthickness formed in the head of subs'tantially'the same cross-sectionalarea as that of the socket, through which eye the socket may be passedto form 'a self-locking loop around an electrical conductor, and anintermediate interconnecting portion, the cross-sectional area of thepart of said intermediate connecting portion of the holder adjacent thehead corresponding to, but of larger dimensions than those of the eyeand engaged by pressure exerted upon it by the resilience of the headwhen said adjacent portion has been forced through the eye.

ARTHUR MERRICK STONER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 783,520 Harpham Feb. 28, 1905831,391 Ubellar Sept. 18,1906

1,044,519 Hassard Nov. 19, 1912 1,924,596 Davis 1 Aug. 29, 19332,297,661 Okun Sept. 29, 1942

